Milking-machine.



K. 1. LINDSTRUM. MILKING MACHINE.

APPLICATION FILED JUNEIS, 1912.

1,045,991 Patented Dec. 3,1912.

V w A fit/55mins I, mggafi 11 TTOHNEY.

* UNITED STATES PATENT OFFICE.

KivU'r IVAR nrlvnsrnoivr. or NYKVARN, SWEDEN.

MILKINGLMACHINE.

Specification of Letters Ifatent.

.My present invention relates to milking machines of the kind inwhich/the milk is sucked or pressed out of the udder of the j cow bymeans of vacuum or pressure or alternate vacuum and pressure.

In all machines of this kind hitherto constructed. the milk is suckedfrom the udder into a milk receiver placed beside the cow, by means ofmore or less long and branched tubes ofindia rubber. This arrangement,however, suffers from two considerable inconveniences which lessen to anessential degree the practical value of these machines. Firstly the saidtubes can only be kept free from dirt and bacteria by the most minuteand time-consuming cleanings. These machines will thus, according towhatexperience has taught us, become more or less unhygienic anddiflicultto keep clean.

Secondly it is impossible to observe when a teat is milked out and as itpractically never occurs that all the teats are milked outsimultaneously, one or more of the glands of the udder which are exposedto suction after having been emptied of the milk will sometimes beovermilked, sothat the delicate glandular tissue of the udder breaks andan infiammationinjurious to the udder ensues.

These two inconveniences will be totally overcome by thepresentinvention, wherein the teat cups, by means of fixed inflexiblepipes or by means of pipes having flexible joints, are so connected withan adjustable oonnection inserted into the wall of the milk receiver,said receiver itself being attached to the cow, that the tubes can bedisplaced relatively to themilk receiver and also be turned, whereassimultaneously a complete tightening is maintained bet-ween tube andmilk receiver. According to the present invention the teat cupsfurthermore are arranged so as to be easily cleansed.

The invention is shown on the accompanying drawing where Figures 1 and 2show the milking machine seen respectively from the side and from above.Fig. 3 shows specially the adjustable connection. between a pine and themilk receiver, and Figs. 4 and 5 show an lflTfiT/IOIL means of the hooks3, in a girt resting upon the back of the cow. On the upper side ofthe-milk receiver l'there is an airetightl closing cover 4, to which thepulsator (not shown in the drawing) is secured by means of the bow'5.There is further ahandle 23 on the cover and a frame 6 in which is airtightly arranged a disk 7 of any transparent material, for instancecelluloid, for the purpose of observing the interiorcf the milkreceiver. On the vertical part 8 of the PatentedDecB, 1912. Applicationfiled June 1a, 1912.- s iai'm. 703,504.

frame 6, said part being turned to the udder.

are arranged four sockets 9 see Fig. '3) threaded on the inside. In thesaid sockets the nuts 10 are screwed. Between the s -kets 9 and nuts '10there are packings l1 preferably consisting of airing of an elasticmaterial, for instance india rubber, or consistmg of atubular rlng orthe hke filled with compressed air. Through the nut, the ring and theframe opening passes the pipe 12 that can be moved into and out ofthemilk receiver, when the nut is not screwed in. Then introducing thenut. the ring 11 is pressed together and dilated circumferentiallythereby forming a ti htening between the pipe and the frame opening. 011ac-' count of the elasticity of thepacking the pipe can be moved'in allpositions to a certain degree. Each pipe 12 is provided with a cook 13and in its free end with a flanged cup 14.

The teat cup (Figs. 4 and 5)-consists of an outer shell 15 of metalandan inner shell 16 of india rubber. Between 15 and 16 there is a spacecommunicating through thehole 1'7 and the mouth piece 18 by means of anelastic tube (not shown) with the pulsator 5 arranged on the cover 4,said pulsator exercising an intermittent vacuum and pressure, forinstance atmospheric pressure, in the space between 15 and 16'. On themetal shell 15 there is arranged a ring 19 having a fixed hook 20 and a'turnable hook 21, said hooks grasping the flange 24 on the cup 14 andpressing it air-tightly against the shell 16, the lower part of which isbent over the flange 22 which is secured to the bottom part of the metalshell 15.

From the construction it willbe ,seen

firstly that the milk is led from the teat through the disk]? of the cupto' the milk-receiver by metal pipes which can be thoroughlycleansed,secondly that theteat elements can be moved within certain limits',,inall'positions, thirdly. that a perfect tightening between theteatelements and the milk receiver isattained, fourthly that the teatcup can be easily removed from the pipe for cleansing purposes andfinally that. it is possible to observe milk receiver when one or moreteats are milked out, and then to set thecorresponding teat element outof action by shut-tin the cock 13.. ,Thijs riiaic'shine 1 us meets allhygienic and sanitary demands of a milking machine of the vacuum.system. The conduitconnec'ting the teat cup with the receiver also mayconsist or two or more pipes connected with each other "byjmeans ofelastic. sockets Ior flexible joints,- in which case' the packingsQn'the receiver need not beso elastic as to" ermit-a lateral bending ofthe eonduit.) obvious that the. locking device 19,20, 21 and 22 also maybe replaced by any othersuitahle. device, for instance a baypnet -lockor the like. v 1;? aving'now ,fully described my invention, what vLetters Patent .is:-' v

11A milking machine comprising in com-. bination, a receiver adapted tobe suspended from an animal,'teat en aging deri'gidtubes connected witsaid dey and air tight means 'a'djustably con- 'necting said rigid tubeswith said receiver, substantially asdescribed.--

a A milkin'g'machine comprising in aim-- eeiver, said means 4-5bination, a'.milk rece1ver adapted {to -be suspendedfrom the animal,means'for main- .apartial vacuum said receiver, 'tea'tenga g' devices,tagiditubesconnected .sai devices, and adjustably connecting said r'gidtubes. withsaid -re-. i fluid tight" connection, fsu

stantially as de- "scribed.

. 3. A machine comprising in com- I claim and desire. to protect bynectmg said deyices with sai receiver.

'anair tight and bination a milk receiver adapted to be sus- .p'endedfrom the animal, teat engaging devices, rigid tubes rigidly connectedwith said devices, and means adjustably and rigidlyconnecting said tubeswith said receiver, substantially asdescribed. 1

4. A milking machine comprising in combination, a milk receiver, teatengaging devices, rigid tubes, means rigidly and detachably connectingsaid tube with said devices,

and means rigidly and adjustably connect ingsaid tubes withs'aidieceiv'er, substaniso tially as described.

5. A milking machine comprising in combination, a milkreceiver'adaptedto besuspended from the animal, teat engaging devices,rigid tubes, means detachably' connecting said tubes with said devices,means detachably connecting'said tubes with said receiver, substantiallyas described.

' 6. A milking machine comprising in com.- bination, an envelo ingdevice comprising"- an inner elapsible s ellor tube adapted tosurroundfthe tube spaced apart from the inner tube to.

70' teat, arr-outer rigid shell or form an intermediate. chamber,air-tight" and outer connecting means for said inn'er tubes-com tubes, amilk receiver, and'rigid 7. A milking machine comprising in combination,an airtight milk receiver provided with I an openingand adapted 'to besuspended from the animal, a rigid,pipe projecting into said opening,

'yielding packing surrounding said pipe adjacent the wall of saidopening, and means collapsing said packing; against .said pipe and thewall of said openin thereby form ing an adjustable and air -tlghtconnection" between said pipe and receiver, substantially 'asd'escribed.y

' In, testimony whereof I have'aflixed' signature in presence of twowitnesses. I LINDSTRGM. witness.esv: I

Gama PmsaL, I [1 711. Wawamsxr,

8 an annu ar

